9V Rechargeable Battery - 300 mAH for Arduino/Raspberry-Pi/Robotics

9V Rechargeable Battery - 300 mAH for Arduino/Raspberry-Pi/Robotics

A rechargeable battery, storage battery, or accumulator is a type of electrical battery. It comprises one or more electrochemical cells, and is a type of energy accumulator. It is known as a secondary cell because its electrochemical reactions are electrically reversible.